Simple Active Directory

Simple AD is a standalone managed directory that is powered by a Samba 4 Active Directory
Compatible Server. It is available in two sizes.

Small - Supports up to 500 users (approximately 2,000 objects including users, groups,
and computers).

Large - Supports up to 5,000 users (approximately 20,000 objects including users,
groups, and computers).

Simple AD provides a subset of the features offered by AWS Managed Microsoft AD, including
the ability
to manage user accounts and group memberships, create and apply group policies, securely
connect
to Amazon EC2 instances, and provide Kerberos-based single sign-on (SSO). However,
note that
Simple AD does not support features such as trust relationships with other domains,
Active
Directory Administrative Center, PowerShell support, Active Directory recycle bin,
group managed
service accounts, and schema extensions for POSIX and Microsoft applications.